2151297287 has 8 divisors (see below), whose sum is σ = 2264958000. Its totient is φ = 2037680064.

The previous prime is 2151297263. The next prime is 2151297289. The reversal of 2151297287 is 7827921512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151297287 - 2⁶ = 2151297223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151297289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158339 + ... + 171387.

It is an arithmetic number, because the mean of its divisors is an integer number (283119750).

Almost surely, 2^2151297287 is an apocalyptic number.

2151297287 is a deficient number, since it is larger than the sum of its proper divisors (113660713).

2151297287 is a wasteful number, since it uses less digits than its factorization.

2151297287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21745.

The product of its digits is 141120, while the sum is 44.

The square root of 2151297287 is about 46382.0793733959. The cubic root of 2151297287 is about 1290.9224192051.

The spelling of 2151297287 in words is "two billion, one hundred fifty-one million, two hundred ninety-seven thousand, two hundred eighty-seven".